vod_drm_max_info_length

The vod_drm_max_info_length directive controls the maximum size of the DRM (Digital Rights Management) information that can be included in the response headers of requests processed by the NGINX-based VOD Packager module. This functionality is relevant for use cases involving encrypted streaming, where specific metadata is needed to manage access and rights to media content.

When set, this directive ensures that the size of the DRM information attached to media responses does not exceed a specified limit, thus helping to optimize performance and prevent potential issues related to excessively large headers. The parameter is expected to be provided as an integer value that defines the maximum length in bytes. If the actual DRM information exceeds this length, it may be truncated or omitted, depending on the implementation specifics of the module.

Setting this directive appropriately is crucial for balancing between security (by including necessary DRM metadata) and efficiency (by avoiding bloated headers that could impact network performance). This directive can be configured at the http, server, and location contexts, offering flexibility in its application across different parts of the server configuration.